53969189 has 4 divisors (see below), whose sum is σ = 54040140. Its totient is φ = 53898240.

The previous prime is 53969183. The next prime is 53969197. The reversal of 53969189 is 98196935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22137025 + 31832164 = 4705^2 + 5642^2 .

It is a cyclic number.

It is not a de Polignac number, because 53969189 - 2¹⁶ = 53903653 is a prime.

It is a super-2 number, since 2×53969189² = 5825346722635442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53969183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34322 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (13510035).

Almost surely, 2^53969189 is an apocalyptic number.

It is an amenable number.

53969189 is a deficient number, since it is larger than the sum of its proper divisors (70951).

53969189 is an equidigital number, since it uses as much as digits as its factorization.

53969189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70950.

The product of its digits is 524880, while the sum is 50.

The square root of 53969189 is about 7346.3725062101. The cubic root of 53969189 is about 377.9044134630.

The spelling of 53969189 in words is "fifty-three million, nine hundred sixty-nine thousand, one hundred eighty-nine".